function hoverMainMenu(layer){
	applyFilter (layer, "className", "formover");
	layer.style.cursor='hand';
}
function offMainMenu(layer){
	
	applyFilter (layer, "className", "formout"); 
}
function applyFilter(layer, property, value){
	layer.style.filter = "blendTrans(duration=.3)";
	layer.filters.blendTrans.apply();
	layer[property] = value; 
	layer.filters.blendTrans.play(); 
}